Genuine OEM Audi Engine Coolant Hose, part number 6R0121056A. This durable rubber hose is designed to transport engine coolant between various components of the cooling system, such as the radiator, engine block, and heater core. It plays a critical role in regulating engine temperature and preventing overheating. Its specific curved shape ensures correct routing and fitment within the engine bay. Weighing 0.0675 kg, using a genuine OEM hose ensures resistance to high temperatures and pressures, proper routing geometry, and long-term leak-free performance, which is vital for engine longevity.